The foods which have the most positive impact on age-proofing your brain, and consequently assisting in maintaining a healthy weight and preventing diabetes, are in a category called, "anti-inflammatory" foods. Research has shown that many of the diseases we know today are caused by inflammation of the tissues of the various organs. We cannot see it or feel it, but it is happening because of the irritation of processed, refined foods and artificial ingredients found in our packaged foods more and more today.